Checkerbrick and checkerwork construction



s P 9 A. J. BOYNTON 1,880,011

CHECKERBRICK AND CHECKERWORK CONSTRUCTION Filed Oct. 9., 1930 Patented Sept. 27, 1932 FIFICE PA'EEN ARTHUR J. BOYNTON, OF CHICAGO, ILLINOIS, ASSIGNOR TO E. A. BRASSERT & GONE- PANY,YOF CHICAGO, ILLINOI$, A CORPORATION OF ILLINOIS GHECKERBB'ICK AND CHECKERWORK CONSTRUCTION Application filed October a, 1930. Serial No. 487,483.

This invention relates to a new and improved checkerbrick and checkerworn construction, and more particularly to a brick and construction in which supplementary or secondary brick are supported from the main checkerbrick.

In the construction of hot blast stoves for blast furnaces, and construction of similar types of heat absorbing structures, brick work is built up to form vertically extending passageways. In the earlier forms of construction these passageways were uniform throughout the height of the structure. In view of the fact that the temperatures of the gases are materially reduced upon passage through the structure and the temperature of the air being heated is materially increased upon passage through the structure in the opposite direction, the volumes of the gases and the air are materially differentat different points in the structure. These differences in volume, taken in connection with the constant passage area, have resulted in differences in velocity and in heat transfer.

Certain types of construction have been more recently developed in which the effective passage area through the stove has been modified so that the passage area in general conforms to the volume of the gases or air passing through. This modification of the passage areain certain forms of construction has been effected by the insertion of supplementary or secondary brick into the vertical passageways formed through and between the main checkerbrick. These secondary brick may be of different sizes and areas in different vertical sections of the stove.

It is an object of the present invention to provide new and improved checkerbrick and checkerwork in which means are provided for supporting secondary or supplementary brick.

It is a further object to provide a construction of this character in which the secondary brick are supported upon integral portions of special supporting checkerbrick.

It is also an object to provide a special supporting checkerbrick which may be installed in connection with usual types of main and secondary checkerbrick.

Other and further objects will appear as the description proceeds.

I have illustrated certain preferred embodiments of my invention-in the accompanying drawing, in which Figure 1 is a plan view showing four brick placed together to form vertical passages;

Figure 2 is a View similar to Figure 1, but showing a modified form of construction;

Figure 3 is a view of the brick of Figure 1,

with the addition of the secondary brick supported thereon; and

Figure 4 is a view similar to Figure 3, but showing the supporting brick of Figure 2 and a different type of secondarybrick.

In the form shown in Figure 1, the brick 11 are formed with the central vertically extending passageway 12, and as placed together define between them similar vertical- 1y extending passageways 13. These passageways 12 are generally square in cross section and the brick are provided with lugs or extended portions 14 which extend into the passageway 12. The outer faces of the brick 11 are also provided with lugs or extensions 15 which are similar in contour to one-half of an extension 1 1 and which thus, when the brick are placed together, form extensions into the passageway between the brick.

In the construction shown in Figure 2, the brick 16 are provided with interior passageways 17 which are generally square in contour and have portions 18 of the brick extending into such passageways at opposite corners. The brick are further provided on certain of their outer faces with the lugs 19 which together form extensions into the passageways 20 formed between the brick.

In the form of construction shown in Figure 3, octagonal brick 21 are shown supported upon the lower brick 11, and the secondary or supplementary brick 22 are shown supported upon the extended portions 14 of the brick 11. These secondary or supplementary brick 22 are shown as formed with four arms which rest upon these extensions 14, and the surface of the brick extends inwardly between the arms to form four smaller vertically extending passageways 23 through the checker structure.

In the form of construction shown in Figure 4, the brick 16 support octagonal brick 21 and sup lementary or secondary brick 24 are carried iiy the inwardly extending lugs 18 on the lower brick 16. The secondary brick 24 extenddiagonally across the substantially square passages in the brick and between the brick and divide these passages into two smaller passages 25.

It will be apparent that my special form of brick may be inserted in the checkerwork column at any desired point. These brick may be located adjacent the bottom of the column to support the entire column of secondary brick, or additional special supporting brick may be located at intervals through out the column of brick so as to support the secondary brick at a multiplicity of points. As shown and described, the supporting brick may vary in contour, de endent upon the type of secondary brick to e supported thereby.

While I have shown certain preferred forms of construction, these are to be understood to be illustrative only, as I contemplate such changes and modifications as come within the spirit and scope of the appended claims.

I claim:

1. A checkerbrick having a vertical passage tlierethrough, portions of the brick extending into the vertical passage, and lugs on the exterior surface of the brick, said lugs being similar in contour to one-half of the inner extending portion and so placed as toengage similar lugs on adj acent brick to jointly form a full size lug.

2. In a checkerwork construction, checkerbrick having vertically extending passages therein, certain of the brick having portions extending into the passages, and columns of secondary brick fitted in said passageways and supported on said portions.

3. In a checkerwork construction, checkerbrick having vertically extending passages therein, said brick being so placed as to form passages therebetween, certain of the brick having portions extending into both the passageways through and between the brick, and secondary brick placed in said passageways and supported by the extending portions.

Signed at London, England, this 23rd day of September, 1930.

ARTHUR J. BOYNTON. 

